MSD7342-103MSC [COILCRAFT]
General Purpose Inductor, 10uH, 20%, 2 Element, Ferrite-Core, SMD, CHIP, 3030;
| 型号： | MSD7342-103MSC |
| 厂家： | 
Coilcraft lnc. |
| 描述： | General Purpose Inductor, 10uH, 20%, 2 Element, Ferrite-Core, SMD, CHIP, 3030 |
| 文件： | 总3页 (文件大小：227K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Document 621-1
For SEPIC
Coupled Inductors
–
MSD7342 Series Applications
The excellent coupling coefficient (k ≥ 0.94) makes the
MSD7342 series of coupled inductors ideal for use in
SEPIC applications. In SEPIC topologies, the required
inductance for each winding in a coupled inductor is
half the value needed for two separate inductors, allow-
ing selection of a part with lower DCR and higher
current handling.
These inductors provide high inductance, high efficiency
and excellent current handling in a rugged, low cost part.
They can also be used as two single inductors con-
nected in series or parallel, as a common mode choke
or as a 1 : 1 transformer.
0.295
max
7,5
D1
+
+
Dot indicates
pin 1
L1
Q1
C1
+
V
V
OUT
L2
C2
Load
0.295
max
IN
7,5
123
1
2
L1
3
L2
–
–
4
Typical SEPIC schematic
Refer to Application Note, Document 639,
“Selecting Coupled Inductors for SEPIC Applications”
0.181
max
4,6
0.028
0,7
Recommended
Land Pattern
Core material Ferrite
Terminations RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
0.091
2,3
0.110
2,8
0.083
2,1
Weight 0.76 – 0.87g
Ambient temperature –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
3
2
4
1
2
3
1
4
0.150
3,8
0.130
3,3
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Winding to winding isolation 200 Vrms
0.043
1,10
0.063
Resistance to soldering heat Max three 40 second reflows at
1,6
+260°C, parts cooled to room temperature between cycles
inches
mm
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Dimensions are in
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 250/7″ reel; 1000/13″ reel Plastic tape: 16 mm wide,
0.4 mm thick, 12 mm pocket spacing, 4.9 mm pocket depth
PCB washing Only pure water or alcohol recommended
Specifications subject to change without notice.
Please check our website for latest information.
Document621-1 Revised11/10/09
© Coilcraft, Inc. 2010
Document 621-2
Coupled Inductors for SEPIC Applications– MSD7342 Series
Irms (A)
both one
windings6 winding7
Isat (A)5
10% drop 20% drop 30% drop
Inductance2
±20% (µH)
DCRmax3 SRF typ4
Partnumber1
(Ohms)
(MHz)
MSD7342-252ML_
MSD7342-332ML_
MSD7342-472ML_
MSD7342-562ML_
MSD7342-682ML_
2.5
3.3
4.7
5.6
6.8
0.033
0.037
0.051
0.063
0.070
55
43
35
32
30
6.0
5.2
4.1
3.9
3.7
6.2
5.3
4.3
4.1
3.8
6.3
5.4
4.6
4.2
3.9
2.17
2.05
1.74
1.57
1.49
3.06
2.89
2.46
2.22
2.10
MSD7342-822ML_
MSD7342-103ML_
MSD7342-123ML_
MSD7342-153ML_
MSD7342-183ML_
8.2
10
12
15
18
0.075
0.100
0.120
0.130
0.170
27
22
20
18
15
3.3
2.8
2.5
2.2
2.0
3.4
2.9
2.6
2.3
2.2
3.5
3.0
2.7
2.4
2.3
1.44
1.24
1.14
1.09
0.95
2.03
1.76
1.61
1.54
1.35
MSD7342-223ML_
MSD7342-273ML_
MSD7342-333ML_
MSD7342-393ML_
MSD7342-473ML_
22
27
33
39
47
0.220
0.250
0.270
0.380
0.420
13.5
12.0
11.0
10.0
9.5
1.9
1.7
1.5
1.3
1.2
2.0
1.8
1.6
1.4
1.3
2.1
1.9
1.7
1.5
1.4
0.84
0.79
0.76
0.64
0.61
1.19
1.11
1.07
0.90
0.86
MSD7342-563ML_
MSD7342-683ML_
MSD7342-823ML_
MSD7342-104ML_
MSD7342-124ML_
56
68
82
100
120
0.460
0.600
0.680
0.770
1.03
8.7
7.3
6.2
5.5
4.5
1.1
1.0
0.90
0.80
0.70
1.2
1.1
1.00
0.92
0.80
1.3
1.2
1.1
0.98
0.90
0.58
0.51
0.48
0.45
0.39
0.82
0.72
0.67
0.63
0.55
MSD7342-154ML_
MSD7342-184ML_
MSD7342-224ML_
MSD7342-274ML_
MSD7342-334ML_
150
180
220
270
330
1.35
1.52
1.72
2.41
2.70
4.0
3.8
3.5
3.3
3.0
0.65
0.62
0.59
0.55
0.49
0.76
0.66
0.62
0.57
0.52
0.80
0.73
0.66
0.60
0.54
0.34
0.32
0.30
0.25
0.24
0.48
0.45
0.42
0.36
0.34
MSD7342-394ML_
MSD7342-474ML_
MSD7342-564ML_
MSD7342-684ML_
MSD7342-824ML_
390
470
560
680
820
3.05
4.00
4.43
5.00
6.80
2.8
2.6
2.5
2.3
2.2
0.45
0.41
0.38
0.36
0.30
0.47
0.43
0.40
0.37
0.32
0.50
0.46
0.42
0.38
0.35
0.23
0.20
0.19
0.18
0.15
0.32
0.28
0.26
0.25
0.21
MSD7342-105ML_
1000
7.80
2.0
0.27
0.29
0.31
0.14
0.20
1. Please specify termination and packaging codes:
MSD7342-105MLC
Temperature rise calculation based on specified Irms
Winding power loss = (IL12 + IL22) × DCR in Watts (W)
Termination: L = RoHS compliant matte tin over nickel over phos bronze.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
129°C
W
Temperature rise (Δt) = Winding power loss ×
129°C
Δt = (IL12 + IL22) × DCR ×
W
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (250 parts per full reel).
B = Less than full reel. In tape, but not machine ready. To
have a leader and trailer added ($25 charge), use
code letter C instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (1000 parts per
full reel).
Example 1. MSD7342-123ML (Equal current in each winding)
Winding power loss = (1.142 +1.142) × 0.120 = 0.312 W
129°C
t = 0.312 W ×
= 40°C
Δ
W
Example 2. MSD7342-123ML (IL1 = 1.4 A, IL2 = 0.6 A)
Winding power loss = (1.42 +0.62) × 0.120 = 0.278 W
129°C
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0
Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are
connected in parallel, inductance is the same value. When leads are
connected in series, inductance is four times the value.
3. DCR is for each winding. When leads are connected in parallel, DCR is
half the value. When leads are connected in series, DCR is twice the
value.
t = 0.278 W ×
= 36°C
Δ
W
Coupled Inductor Core and Winding Loss Calculator
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
are connected in parallel, SRF is the same value.
This web-based utility allows you to enter frequency, peak-to-peak (ripple)
current, and Irms current to predict temperature rise and overall losses,
including core loss. Visit www.coilcraft.com/coupledloss.
5. DC current, at which the inductance drops the specified amount from its
value without current. It is the sum of the current flowing in both windings.
6. Equal current when applied to each winding simultaneously that causes
a 40°C temperature rise from 25°C ambient. See temperature rise
calculation.
7. Maximum current when applied to one winding that causes a 40°C
temperature rise from 25°C ambient. See temperature rise calculation.
8. Electrical specifications at 25°C.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Specifications subject to change without notice.
Please check our website for latest information.
Document621-2 Revised11/10/09
© Coilcraft, Inc. 2010
Document 621-3
Coupled Inductors for SEPIC Applications– MSD7342 Series
Typical L vs Current
Typical L vs Frequency
10000
10000
1000 µH
1000
1000 µH
1000
470 µH
470 µH
100 µH
100 µH
100
100
47 µH
47 µH
10 µH
10 µH
4.7 µH
10
10
4.7 µH
1
1
0.01
0.1
1
10
0.1
1
10
100
Current (A)
Frequency (MHz)
Irms Derating
120
110
100
90
80
70
60
50
40
30
20
10
0
-40 -20
0
20
40
60
80
100
120 140
Ambient temperature (°C)
Specifications subject to change without notice.
Please check our website for latest information.
Document621-3 Revised11/10/09
© Coilcraft, Inc. 2010
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